This book is truly a gem and you won't find a better book on the subject. I'm 64 and read this book back in high school and I've been fascinated with OBEs and the paranormal ever since. Even though it was published in 1929, it stands the test of time. Muldoon's goal is not only to describe his experiences out of the body as accurately as possible, but to teach the reader how to achieve this state for themselves and have direct experiences of the phenomena. I love the PDF version of this book and recommend it. I have more recent publications of the book and the PDF version here exactly matches the more recent publications of the book. Nothing is left out. And the PDF version contains the same illustrations found in the printed book.